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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 103 for “"Delocalization"”.
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Delocalization: The Highway Apparatus
Delocalization examines a post “urban/city” condition of development along the highway corridor between Delhi and Chandigarh in India. It imagines the process of development as an emergence through the refrain of the local, or its network of interests the localities (understood as not just static …
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Delocalization phenomena in strongly disordered systems
In this dissertation, we study delocalization mechanisms in strongly disordered systems. We focus on one-dimensional systems where the localizing effects of disorder are strongest. Our explorations of delocalization mechanisms will reveal new insights into the nature of Anderson transitions in the …
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Studies of Electron Delocalization in Paramagnetic Metallocenes
Made available in DSpace on 2014-12-09T17:35:57Z (GMT). No. of bitstreams: 1 6808203.pdf: 6505746 bytes, checksum: a41b026007e28b49195753767e2f4d8c (MD5) Previous issue date: 1967
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Localization and delocalization in two-dimensional quantum percolation
… of whether conduction, or more generally, delocalization, is possible in two dimensional disordered systems. Whether quantum percolation exhibits a delocalization-localization phase transition in two dimensions is an ongoing debate, but many recent studies point toward there being a …
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Electron Delocalization in Paramagnetic Nickel(ii)-Ammine Complexes
Made available in DSpace on 2014-12-09T17:36:10Z (GMT). No. of bitstreams: 1 6910701.pdf: 4864703 bytes, checksum: 0c2bfba8605fad22f2a1b76b54497038 (MD5) Previous issue date: 1968
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Localization, escape rate and delocalization in kinked ratchet potentials
… tilting frequency induces stochastic resonance. Delocalization of a particle is observed in the resonant activation regime.
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Vibrational Relaxation and Delocalization in Molecular Crystals and Biological Systems
Perturbations to the vibrational Hamiltonian of isolated gas molecules resulting from a crystalline environment are examined. FTIR is used to study the effects of two different crystal fields on the vibrational modes of perylene and Picosecond Coherent Raman Scattering (ps CARS) is applied to the …
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An Extended Huckel Investigation of Unpaired Spin Delocalization in Sigmasystems
Made available in DSpace on 2014-12-09T17:36:32Z (GMT). No. of bitstreams: 1 7013283.pdf: 2720143 bytes, checksum: 83ebd307f1c84425491ea75be9410dee (MD5) Previous issue date: 1969
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Study of an electronic localization-delocalization transition in germanium-gold alloys
Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-20T20:19:11Z No. of bitstreams: 1 1980_dodson.pdf: 1858317 bytes, checksum: 40984d70099f9a9ddf9ea4ed4ffcc380 (MD5)
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Novel Aspects of Localization, Delocalization, and Anomalous Transport in One-dimensional Systems
… and show that both localization and delocalization can exist in these systems. We also show that disorder can help collimate electron beams in the superlattice. Then we move to another novel system, a disordered quantum walk (QW) model. We demonstrate that our QW model possesses the …
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A Study of Electron Delocalization and Bonding in Some Paramagnetic Bisarene Complexes
Made available in DSpace on 2014-12-09T17:36:28Z (GMT). No. of bitstreams: 1 7013233.pdf: 6408011 bytes, checksum: 7d1d225e9cc3ea4fdcddaa23b45c6890 (MD5) Previous issue date: 1969
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Scaling studies of frustrated systems, random-field tricriticality, electronic conduction models, and interface delocalization
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Physics, 1999.
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Quantum chemical investigation of electron delocalization patterns during photoexcitation in Fischer carbene complexes: a theoretical study
… FALDI in order to probe the degree of electron delocalization present in metal-to-ligand charge transfer states.
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Wannier Functions and Their Role in Improving Density Functional Approximations
… band gaps. These deficiencies can be traced to delocalization error in density functional approximations. In finite systems, delocalization error can be attributed to the incorrect treatment of fractional electron charge whereby the total energy deviates from the correct behavior of linear …
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Photophysics of Phenylene Vinylene Polymers and Oligomers: The Influence of Nanocrystalline Domains
… distribution can be used as a measure of exciton delocalization. Transient emission spectroscopy shows that an initially localized exciton undergoes delocalization inside a single nanocrystalline domain on 10 ps time scale and the inter-domain energy transfer occurs over 100 ps. Isolated …
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Towards Systematic Improvement of Density Functional Approximations
… density functional approximations is the delocalization error, which arises because of the violation of Perdew-Parr-Levy-Balduz (PPLB) linearity condition. The PPLB condition governs the formulation of the density functional theory for fractional-charge systems, for which the ground state …
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Robust Nickel Catalysts Supported By Biaryl-Bridged Pyridyl-N-Heterocyclic Carbenes For Carbon Dioxide Reduction To Value-Added Products
… and polyaromatic frameworks with increased delocalization to lower overpotentials for catalysis. We report a family of biaryl-bridged pyridyl-N-heterocyclic carbene-based ligands and their corresponding nickel complexes. Ligand synthesis, structural characterization of complexes, and their …
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The electrochemical behavior and electronic structure of non- transition metal chelate radical anions
… on the acetylacetone are capable of extensive delocalization with the chelate ring (e.g., benzoylacetomethane) and/or when the R groups on boron are sufficiently withdrawing (R = F, C₆H₅), these species are capable of reversible one-electron reduction to the radical ion. These ion radicals are …
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First-Principles Study of Electronic Structure and Optical Properties of Semiconductor Surfaces Unified Approach for Exact Calculation of Coupling Coefficients of Quantum Angular Momenta
… energy splitting of the tunneling doublet, the delocalization rate is largely independent of the friction of the environment and of the specifics of the driving force, depending only on its overall strength. This robust behavior implies that localized states can be stabilized in these systems …
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